Annunciator

This electric call system, called an annunciator, hangs on the kitchen wall in Clayton, where it could be easily seen and heard by household staff. When a small, doorbell-like button was pushed in nearly any room of the house, the bell at the top of the annunciator rang. At the same time, the correct arrow turned and pointed to the signaling room. Upon hearing the bell, a staff member checked to see which room was calling, and hurried to lend the proper attention. Arrows were reset with the knob at the bottom of the box.